Costco! Bionaire Twin Airflow Window Fan $39!!!

Costco has window fans on sale for $39! This is better than Amazon ( https://amzn.to/2HftMz8) that sells it for $55-60!  Though they may have different ones online.  I use window fans to quickly pull cool air in or exhaust hot or bad air out of the room. Especially during carpet shampooing or working with oil painting.

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